Siri won't respond until phone is lifted away from ear after I ask question

Using Iphone 4S Jailbroken on 5.1.1
Recently when asking Siri something, I can get no response until I remove the iphone away from my ear.
I have disabled the Siri MY Assistant app and also the 'raise to speak ' is turned off.
Dunno what it can be but it's annoying. I don't get the usual spoken answer.
-keevill-